решите уравнение

(x-10) ^2 + (x+9) ^2=2x^2

(x-5) ^2 + (x+4) ^2=2x^2

x^2-3x-40=0

x^2+7x+6=0

x^2+6x+9=0

x^2+3x-54=0

(x-10) ^2 + (x+9) ^2=2x^2

x^2-20x+100+x^2+18x+81-2x^2=0

-2x+181=0

x=181/2=90,5

(x-5) ^2 + (x+4) ^2=2x^2

x^2-10x+25+x^2+8x+16-2x^2=0

-2x+41=0

x=41/2=20,5

x^2-3x-40=0

D=9+160=169

x1 = (3+13) / 2=8

x2 = (3-13) / 2=-5

x^2+7x+6=0

D=49-24=25

x1 = (-7+5) / 2=-1

x2 = (-7-5) / 2=-6

x^2+6x+9=0

D=36-36=0

x=-6/2=-3

x^2+3x-54=0

D=9+4*54=225

x1 = (-3+15) / 2=6

x2 = (-3-15) / 2=-9